Extreme Length Primer is paired with ‘s Interlock Protein Network and Fortifying Complex. This biotin-enriched formula provides weightless conditioning and helps vertically build resilient protein chains to increase hair’s length potential. Split ends and breakage are reduced when using the full Extreme line HOW TO USE: After using Extreme Shampoo, apply on damp hair from root to ends. Leave on 2-5 minutes. Rinse.
